Dev tools MCP servers

14901 servers, 12992 answering our latest check. Online first.

Numverify

Numverify MCP — wraps the Numverify phone-number validation API (APILayer)
gateway.pipeworx.io/numverify/mcp
● Online, checked 19 min ago

by pipeworx-io (GitHub)

SEFAZ PI: NFC-e

SEFAZ PI: NFC-e, official-source lookup. Platform-hosted, pay per query with prepaid credit.
api.mcp.ai/p_sefaz_pi_nfce
● Online, checked 20 min ago

by mcp-dir (GitHub)

grapheme-cluster count, text discarded

grapheme-cluster count, text discarded
agent-observatory-sensor.nolimit-observatory.workers.dev/s/grapheme-n/mcp
● Online, checked 18 min ago

by sadri-dridi (GitHub)

Nsi Bg

Bulgarian National Statistical Institute (НСИ / NSI) — Open Data API.
gateway.pipeworx.io/nsi-bg/mcp
● Online, checked 19 min ago

by pipeworx-io (GitHub)

SEFAZ PI: IPVA

SEFAZ PI: IPVA, official-source lookup. Platform-hosted, pay per query with prepaid credit.
api.mcp.ai/p_sefaz_pi_ipva
● Online, checked 20 min ago

by mcp-dir (GitHub)

URL-ish token charset, value discarded

URL-ish token charset, value discarded
agent-observatory-sensor.nolimit-observatory.workers.dev/s/urlish-ok/mcp
● Online, checked 18 min ago

by sadri-dridi (GitHub)

Nsf Awards

NSF Awards MCP — National Science Foundation award database (free, no auth)
gateway.pipeworx.io/nsf-awards/mcp
● Online, checked 19 min ago

by pipeworx-io (GitHub)

SEFAZ PI: Solicitar Certidão Negativa da Dívida Ativa (CNDA)

SEFAZ PI: Solicitar Certificate Negativa da Dívida Ativa (CNDA), official-source lookup. Platform-ho
api.mcp.ai/p_sefaz_pi_cnda
● Online, checked 20 min ago

by mcp-dir (GitHub)

ISO-8859-1 byte band, value discarded

ISO-8859-1 byte band, value discarded
agent-observatory-sensor.nolimit-observatory.workers.dev/s/latin1-ok/mcp
● Online, checked 18 min ago

by sadri-dridi (GitHub)

Nps

NPS MCP — US National Park Service (free key, generous limits)
gateway.pipeworx.io/nps/mcp
● Online, checked 19 min ago

by pipeworx-io (GitHub)

SEFAZ PI: Solicitar Certidão Negativa de Débitos

SEFAZ PI: Solicitar Clearance Certificate (Debts), official-source lookup. Platform-hosted, pay per
api.mcp.ai/p_sefaz_pi_certidao_debitos
● Online, checked 20 min ago

by mcp-dir (GitHub)

Days in current UTC month

Days in current UTC month
agent-observatory-sensor.nolimit-observatory.workers.dev/s/month-len/mcp
● Online, checked 18 min ago

by sadri-dridi (GitHub)

Nplg Catalog

National Parliamentary Library of Georgia MCP — the union catalogue and the
gateway.pipeworx.io/nplg-catalog/mcp
● Online, checked 19 min ago

by pipeworx-io (GitHub)

SEFAZ PE: NFC-e

SEFAZ PE: NFC-e, official-source lookup. Platform-hosted, pay per query with prepaid credit.
api.mcp.ai/p_sefaz_pe_nfce
● Online, checked 20 min ago

by mcp-dir (GitHub)

UTC Thursday of the current ISO week

UTC Thursday of the current ISO week
agent-observatory-sensor.nolimit-observatory.workers.dev/s/week-thu/mcp
● Online, checked 18 min ago

by sadri-dridi (GitHub)

Nominatim

Nominatim MCP — wraps OpenStreetMap Nominatim geocoding API (free, no auth)
gateway.pipeworx.io/nominatim/mcp
● Online, checked 19 min ago

by pipeworx-io (GitHub)

SEFAZ PE: Dívida Ativa

SEFAZ PE: Dívida Ativa, official-source lookup. Platform-hosted, pay per query with prepaid credit.
api.mcp.ai/p_sefaz_pe_divida_ativa
● Online, checked 20 min ago

by mcp-dir (GitHub)

HMAC-SHA256 hex length, input discarded

HMAC-SHA256 hex length, input discarded
agent-observatory-sensor.nolimit-observatory.workers.dev/s/hmac256-len/mcp
● Online, checked 18 min ago

by sadri-dridi (GitHub)

Noaa Ndbc

NOAA NDBC MCP — National Data Buoy Center marine observations
gateway.pipeworx.io/noaa-ndbc/mcp
● Online, checked 19 min ago

by pipeworx-io (GitHub)

SEFAZ PE DEC: Caixa Postal

SEFAZ PE DEC: Caixa Postal, official-source lookup. Platform-hosted, pay per query with prepaid cred
api.mcp.ai/p_sefaz_pe_dec_caixa_postal
● Online, checked 20 min ago

by mcp-dir (GitHub)

BLAKE2s hex length, input discarded

BLAKE2s hex length, input discarded
agent-observatory-sensor.nolimit-observatory.workers.dev/s/blake2s-len/mcp
● Online, checked 18 min ago

by sadri-dridi (GitHub)

Noaa Ncei

NOAA NCEI MCP — the national climate archive, via the keyless Access services
gateway.pipeworx.io/noaa-ncei/mcp
● Online, checked 19 min ago

by pipeworx-io (GitHub)

SEFAZ PE: Certidão de Regularidade Fiscal (Móvel)

SEFAZ PE: Certificate de Regularidade Fiscal (Móvel), official-source lookup. Platform-hosted, pay p
api.mcp.ai/p_sefaz_pe_crf_movel
● Online, checked 20 min ago

by mcp-dir (GitHub)

BLAKE2b hex length, input discarded

BLAKE2b hex length, input discarded
agent-observatory-sensor.nolimit-observatory.workers.dev/s/blake2b-len/mcp
● Online, checked 18 min ago

by sadri-dridi (GitHub)

Noaa Coastwatch

NOAA CoastWatch — satellite and model ocean data via ERDDAP.
gateway.pipeworx.io/noaa-coastwatch/mcp
● Online, checked 19 min ago

by pipeworx-io (GitHub)

SEFAZ PE: Certidão de Regularidade Fiscal

SEFAZ PE: Certificate de Regularidade Fiscal, official-source lookup. Platform-hosted, pay per query
api.mcp.ai/p_sefaz_pe_crf
● Online, checked 20 min ago

by mcp-dir (GitHub)

Forwarded for= hop count, value discarded

Forwarded for= hop count, value discarded
agent-observatory-sensor.nolimit-observatory.workers.dev/s/forwarded-n/mcp
● Online, checked 18 min ago

by sadri-dridi (GitHub)

Nlrb

NLRB MCP — US National Labor Relations Board case search: unfair labor
gateway.pipeworx.io/nlrb/mcp
● Online, checked 19 min ago

by pipeworx-io (GitHub)

SEFAZ PE: Certidão Negativa de Débitos

SEFAZ PE: Clearance Certificate (Debts), official-source lookup. Platform-hosted, pay per query with
api.mcp.ai/p_sefaz_pe_certidao_debitos
● Online, checked 20 min ago

by mcp-dir (GitHub)

Upgrade protocol token, value discarded

Upgrade protocol token, value discarded
agent-observatory-sensor.nolimit-observatory.workers.dev/s/upgrade-ok/mcp
● Online, checked 18 min ago

by sadri-dridi (GitHub)

Nihr

UK NIHR (National Institute for Health and Care Research) open-data MCP.
gateway.pipeworx.io/nihr/mcp
● Online, checked 19 min ago

by pipeworx-io (GitHub)

SEFAZ PB: NFC-e

SEFAZ PB: NFC-e, official-source lookup. Platform-hosted, pay per query with prepaid credit.
api.mcp.ai/p_sefaz_pb_nfce
● Online, checked 20 min ago

by mcp-dir (GitHub)

Trailer field-name count, value discarded

Trailer field-name count, value discarded
agent-observatory-sensor.nolimit-observatory.workers.dev/s/trailer-ok/mcp
● Online, checked 18 min ago

by sadri-dridi (GitHub)

Nih Reporter

NIH RePORTER MCP — every NIH-funded research project (free, no auth)
gateway.pipeworx.io/nih-reporter/mcp
● Online, checked 19 min ago

by pipeworx-io (GitHub)

SEFAZ PB: IPVA

SEFAZ PB: IPVA, official-source lookup. Platform-hosted, pay per query with prepaid credit.
api.mcp.ai/p_sefaz_pb_ipva
● Online, checked 20 min ago

by mcp-dir (GitHub)

multihash prefix shape, value discarded

multihash prefix shape, value discarded
agent-observatory-sensor.nolimit-observatory.workers.dev/s/multihash-ok/mcp
● Online, checked 18 min ago

by sadri-dridi (GitHub)

Nice Guidance

NICE guidance MCP — the National Institute for Health and Care Excellence's
gateway.pipeworx.io/nice-guidance/mcp
● Online, checked 19 min ago

by pipeworx-io (GitHub)

SEFAZ PB: Emissão Dar

SEFAZ PB: Issuance Dar, official-source lookup. Platform-hosted, pay per query with prepaid credit.
api.mcp.ai/p_sefaz_pb_emissao_dar
● Online, checked 20 min ago

by mcp-dir (GitHub)

multibase prefix charset, value discarded

multibase prefix charset, value discarded
agent-observatory-sensor.nolimit-observatory.workers.dev/s/multibase-ok/mcp
● Online, checked 18 min ago

by sadri-dridi (GitHub)

Ni Caselaw

Northern Ireland court and tribunal judicial decisions — judiciaryni.uk.
gateway.pipeworx.io/ni-caselaw/mcp
● Online, checked 19 min ago

by pipeworx-io (GitHub)

SEFAZ PB: Certidão Negativa de Débitos

SEFAZ PB: Clearance Certificate (Debts), official-source lookup. Platform-hosted, pay per query with
api.mcp.ai/p_sefaz_pb_certidao_debitos
● Online, checked 20 min ago

by mcp-dir (GitHub)

content-address hex length, value discarded

content-address hex length, value discarded
agent-observatory-sensor.nolimit-observatory.workers.dev/s/contentid-ok/mcp
● Online, checked 18 min ago

by sadri-dridi (GitHub)

Nhtsa

NHTSA MCP — wraps the NHTSA vPIC (Vehicle Product Information Catalog) API (free, no auth)
gateway.pipeworx.io/nhtsa/mcp
● Online, checked 19 min ago

by pipeworx-io (GitHub)

SEFAZ PA: NFC-e

SEFAZ PA: NFC-e, official-source lookup. Platform-hosted, pay per query with prepaid credit.
api.mcp.ai/p_sefaz_pa_nfce
● Online, checked 20 min ago

by mcp-dir (GitHub)

Megahertz to gigahertz, number discarded

Megahertz to gigahertz, number discarded
agent-observatory-sensor.nolimit-observatory.workers.dev/s/mhz-ghz/mcp
● Online, checked 18 min ago

by sadri-dridi (GitHub)

Newton

Newton MCP — wraps the Newton math solver API (free, no auth)
gateway.pipeworx.io/newton/mcp
● Online, checked 19 min ago

by pipeworx-io (GitHub)

SEFAZ PA: IPVA

SEFAZ PA: IPVA, official-source lookup. Platform-hosted, pay per query with prepaid credit.
api.mcp.ai/p_sefaz_pa_ipva
● Online, checked 20 min ago

by mcp-dir (GitHub)

Mach number to m/s at STP, number discarded

Mach number to m/s at STP, number discarded
agent-observatory-sensor.nolimit-observatory.workers.dev/s/mach-ms/mcp
● Online, checked 18 min ago

by sadri-dridi (GitHub)

Newswire Com

Newswire.com MCP — press releases from Newswire's public newsroom feed.
gateway.pipeworx.io/newswire-com/mcp
● Online, checked 19 min ago

by pipeworx-io (GitHub)

SEFAZ PA DEC: Caixa Postal

SEFAZ PA DEC: Caixa Postal, official-source lookup. Platform-hosted, pay per query with prepaid cred
api.mcp.ai/p_sefaz_pa_dec_caixa_postal
● Online, checked 20 min ago

by mcp-dir (GitHub)

Kilopascals to bar, number discarded

Kilopascals to bar, number discarded
agent-observatory-sensor.nolimit-observatory.workers.dev/s/kpa-bar/mcp
● Online, checked 18 min ago

by sadri-dridi (GitHub)

Nci Evs

NCI Thesaurus concepts and the other cancer-research vocabularies served by NCI Enterprise…
gateway.pipeworx.io/nci-evs/mcp
● Online, checked 19 min ago

by pipeworx-io (GitHub)

SEFAZ PA: Certidão Negativa de Débitos

SEFAZ PA: Clearance Certificate (Debts), official-source lookup. Platform-hosted, pay per query with
api.mcp.ai/p_sefaz_pa_certidao_debitos
● Online, checked 20 min ago

by mcp-dir (GitHub)

RFC 3986 unreserved charset, input discarded

RFC 3986 unreserved charset, input discarded
agent-observatory-sensor.nolimit-observatory.workers.dev/s/rfc3986-ok/mcp
● Online, checked 18 min ago

by sadri-dridi (GitHub)

Ncua

NCUA MCP — US credit union data from the quarterly 5300 Call Report.
gateway.pipeworx.io/ncua/mcp
● Online, checked 19 min ago

by pipeworx-io (GitHub)

SEFAZ: NFC-e (Unificada)

SEFAZ: NFC-e (Unificada), official-source lookup. Platform-hosted, pay per query with prepaid credit
api.mcp.ai/p_sefaz_nfce
● Online, checked 20 min ago

by mcp-dir (GitHub)

POSIX shell quote shape, input discarded

POSIX shell quote shape, input discarded
agent-observatory-sensor.nolimit-observatory.workers.dev/s/shell-esc/mcp
● Online, checked 18 min ago

by sadri-dridi (GitHub)

Ncbi Variation

dbSNP refSNP records and HGVS/SPDI/rsID normalization for human genetic variants, from NCBI…
gateway.pipeworx.io/ncbi-variation/mcp
● Online, checked 19 min ago

by pipeworx-io (GitHub)

SEFAZ MT: Reimpressão de Certidão Negativa de Débitos

SEFAZ MT: Reimpressão de Clearance Certificate (Debts), official-source lookup. Platform-hosted, pay
api.mcp.ai/p_sefaz_mt_reimpressao_cnd
● Online, checked 20 min ago

by mcp-dir (GitHub)

magnet: xt shape, value discarded

magnet: xt shape, value discarded
agent-observatory-sensor.nolimit-observatory.workers.dev/s/magnet-ok/mcp
● Online, checked 18 min ago

by sadri-dridi (GitHub)

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